Pan type vapor burner



Nov. 21, 1950 s. s. BENNETT PAN TYPE VAPOR BURNER Filed Jan. 3, 1946 III t'll! tor J fe bev Eek/2e.

I, and WW 29 Patented Nov. 21, 1950 UNITED STATES PATENT OFFICE PAN TYPEVAPOR BURNER Stephen S. Bennett, Flint, Mich.

Application January 3, 1946, Serial No. 638,817

1 Claim. 1

This invention relates to a liquid fuel burner and has for its object toburn liquid fuel for domestic and other heating purposes efliciently andeconomically.

Another object is to vaporize the fuel admitted to the burner to insurerapid and complete combustion thereof as well as a high degree of spaceutilization efiiciency.

A further object is to commingle uniformly fuel vapor and air admittedto the burner so as to attain uniform combustion together with as low afuel air ratio that may be attained with substantially completecombustion.

The above and other objects may be attained by employing this inventionwhich embodies among its features ashallow pan, an upstanding annularwall within the pan that is surrounded by a combustion space and definesan air receiving chamber therein, means for admitting air into thechamber for subsequent radial flow to the combustion space, and fuelvaporizing and fuel discharge means in the combustion space.

Other features include the fuel vaporizing means comprising a convolutecoil in the combustion space for movement of fuel therein towards thecenter thereof, and the vapor discharge means consisting of nozzles fordirecting the vapor radially outward from the chamber into thecombustion space.

In the drawings:

Figure 1 is a top plan view of the fuel vaporizer and burner adapted tobe fitted in a furnace or other heating unit.

F gure 2 is a sectional view taken substantially on the line 33 ofFigure 1.

Reference is now made more specifically to the accompanying drawings,wherein like numerals designate similar parts throughout the variousviews, and in which at I3 is designated generally the improved burnerfor use with furnaces or the like, not shown. and which comprises ashallow pan I4 formed centrally with an upstanding wall I4 defining anair receiving chamber I5. The upper edge of the wall I4 is provided atdiametrically op osed points with recesses or relatively wide notches ISin which a transversely extending pipe I! fitted at oppos te ends withfuel vapor discharge nozzles I8 is adapted to seat. Opening midway ofthe length of the pipe I 1 to the interior thereof is a vapor feed pipeI9 which as illustrated in Figures 1 and 2 extends downwardly and thenceradially through the wall l4 and is connected to a horizontally disposedconvolute fuel vaporizing coil 20 the opposite end of which is connectedto a fuel feed pipe 2| for connection to a source of fuel supply, notshown. Extending radially into the chamber I of the burner I3 is an airfeed pipe 22 terminating in a downwardly directed leg or nozzle 23 whichdirects the air entering said pipe against the bottom of the chamber I5,which serves as a distributor to secure a uniform flow of air up throughthe upper open end of the chamber l5 and recess Hi.

It will thus be seen that there has been provided a compact and simpleburner that may be readily built in new heating devices utilizing liquidfuel, or used to convert other liquid or solid burning devices to theuse of the same. For example, the subject matter of the presentinvention may be conveniently placed on the grates of conventional coalburning furnaces.

The operation of the present invention will be easily understood. Fuelentering the burner through the pipe ZI will be vaporized in the coil 20and thence discharged by the nozzles I8 radially outward from thechamber I5 into the combustion space. Air also passes radially outwardfrom the chamber I5 to the combustion space with the fuel vapor forcommingling therewith and consumption of the same, such fuel consumptionserving to vaporize the oncoming fuel in the coil 20. The smooth anduniform passage of air from the chamber is assured by the air beingadmitted thereto through the pipe leg 23 adjacent its bottom.

From the foregoing, the construction and use of the invention will beapparent and further description is not seen to be necessary. It isintended that minor changes may be made which do not depart from thescope of the appended claim.

I claim:

In a liquid fuel burning system a liquid fuel burner comprising arelatively shallow pan, an upwardly extending centrally located wall insaid pan forming a centrally located air receiving chamber surrounded byan annular chamber, a convolute fuel vaporizing coil on the bottom ofsaid annular chamber, fuel vapor discharge nozzles carried by the wallof the centrally located air receiving chamber, means coupling the innerend of the coil to the vapor discharge nozzles and means for introducingair under pressure to the air receiving chamber.

STEPHEN S. BENNETT.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Num er Name Date 683,324 Pensyl Sept. 24, 1901846,993 Gilmore Mar. 12, 1907 1,293,226 Smock Feb. 4, 1919 1,417,745Kenworthy May 30, 1922 1,479,538 Herod Jan. 1, 1924 1,537,687 Morris May12, 1925 1,579,310 Gillet Apr. 6, 1926 1,861,997 Gehrsin June 7, 19322,247,848 Poor July 1, 1941 2,260,548 Veghte Oct. 28, 1941 2,265,925Paiano Dec. 9, 1941

